.shielded {
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.4);
  position: fixed;
  top: 0;
  left: 0;
}

.shielded .video_play {
  width: 60%;
  height: 60%;
  text-align: center;
  margin: 150px auto 0;
}